Abstract

Single-walled carbon nanotubes (CNTs) were synthesised at different conditions by a novel aerosol
method based on the introduction of pre-formed iron catalyst particles
into conditions leading to CNT formation. The results of statistical
measurements of individual CNT dimensions based on high-resolution TEM
images showed the effects of the residence time and temperature in the
reactor. The ratio between catalyst particle and CNT diameters was close
to 1.6 and independent of the experimental conditions, thus revealing
an astonishing “universality” in the growth process. A proposed
geometric model of heptagon defect formation, which initiates and
maintains the CNT growth, allowed us to theoretically explain the
phenomenon.

abstract = "Single-walled carbon nanotubes (CNTs) were synthesised at different conditions by a novel aerosol method based on the introduction of pre-formed iron catalyst particles into conditions leading to CNT formation. The results of statistical measurements of individual CNT dimensions based on high-resolution TEM images showed the effects of the residence time and temperature in the reactor. The ratio between catalyst particle and CNT diameters was close to 1.6 and independent of the experimental conditions, thus revealing an astonishing “universality” in the growth process. A proposed geometric model of heptagon defect formation, which initiates and maintains the CNT growth, allowed us to theoretically explain the phenomenon.",

N2 - Single-walled carbon nanotubes (CNTs) were synthesised at different conditions by a novel aerosol
method based on the introduction of pre-formed iron catalyst particles
into conditions leading to CNT formation. The results of statistical
measurements of individual CNT dimensions based on high-resolution TEM
images showed the effects of the residence time and temperature in the
reactor. The ratio between catalyst particle and CNT diameters was close
to 1.6 and independent of the experimental conditions, thus revealing
an astonishing “universality” in the growth process. A proposed
geometric model of heptagon defect formation, which initiates and
maintains the CNT growth, allowed us to theoretically explain the
phenomenon.

AB - Single-walled carbon nanotubes (CNTs) were synthesised at different conditions by a novel aerosol
method based on the introduction of pre-formed iron catalyst particles
into conditions leading to CNT formation. The results of statistical
measurements of individual CNT dimensions based on high-resolution TEM
images showed the effects of the residence time and temperature in the
reactor. The ratio between catalyst particle and CNT diameters was close
to 1.6 and independent of the experimental conditions, thus revealing
an astonishing “universality” in the growth process. A proposed
geometric model of heptagon defect formation, which initiates and
maintains the CNT growth, allowed us to theoretically explain the
phenomenon.